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Answer:
sulfur
Explanation:
sulfur has 4p electrons.
phosphorus has 3p electrons.
The question is asking which one has 4
The element in the third period (row) of the periodic table with a total of 4 3p electrons is sulfur (S).
Sulfur is a chemical element that is present in the third of the periodic table.
Its atomic number is 16.
The electronic configuration of sulfur is [tex]\rm [Ne]\; 3S_2\; 3P_4[/tex]
So, sulfur contains 4 electrons in its last orbital.
Thus, the element in the third period (row) of the periodic table with a total of 4 3p electrons is sulfur (S).
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